US10149019B2 - System for providing data communication over a coaxial network - Google Patents

System for providing data communication over a coaxial network Download PDF

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US10149019B2
US10149019B2 US15/341,739 US201615341739A US10149019B2 US 10149019 B2 US10149019 B2 US 10149019B2 US 201615341739 A US201615341739 A US 201615341739A US 10149019 B2 US10149019 B2 US 10149019B2
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moca
network
chip
coaxial
end device
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US20180014080A1 (en
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Carl Karlsson
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Incoax Networks AB
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Incoax Networks AB
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6106—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network
    • H04N21/6118—Network physical structure; Signal processing specially adapted to the downstream path of the transmission network involving cable transmission, e.g. using a cable modem
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2803—Home automation networks
    • H04L12/283—Processing of data at an internetworking point of a home automation network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2803—Home automation networks
    • H04L12/283—Processing of data at an internetworking point of a home automation network
    • H04L12/2834—Switching of information between an external network and a home network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2803—Home automation networks
    • H04L12/283—Processing of data at an internetworking point of a home automation network
    • H04L12/2836—Protocol conversion between an external network and a home network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/2854—Wide area networks, e.g. public data networks
    • H04L12/2856—Access arrangements, e.g. Internet access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/24—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks using dedicated network management hardware
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
    • H04N21/60—Network structure or processes for video distribution between server and client or between remote clients; Control signalling between clients, server and network components; Transmission of management data between server and client, e.g. sending from server to client commands for recording incoming content stream; Communication details between server and client 
    • H04N21/61—Network physical structure; Signal processing
    • H04N21/6156—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network
    • H04N21/6168—Network physical structure; Signal processing specially adapted to the upstream path of the transmission network involving cable transmission, e.g. using a cable modem
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
    • H04L41/08—Configuration management of networks or network elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/10—Small scale networks; Flat hierarchical networks
    • H04W84/12—WLAN [Wireless Local Area Networks]

Definitions

  • the present invention relates to the architecture of a system for providing data communication over a coaxial network, and to a network end device for connection to a coaxial network in such a system. More specifically it relates to improvements in deployment of a MoCA (Multimedia over Coaxial Alliance) network.
  • MoCA Multimedia over Coaxial Alliance
  • coaxial (coax in short) networks have regularly been implemented in such facilities.
  • Provision of signal access to a building has been accomplished in different ways throughout the years, from the early solution with a local antenna receiver to wired cable TV connection, and later optical fiber networks. Still, there is a need to distribute access within the building, for which the local coaxial network may be used.
  • MoCA Multimedia over Coaxial Alliance
  • MoCA technology runs over the existing in-home coaxial cabling, enabling whole-home distribution of digital content.
  • MoCA provides the backbone for the home digital entertainment network, and supports streaming media such as standard television and allows linking a set-top box to a TV and other entertainment such as computers or game consoles in multiple rooms using existing wiring.
  • MoCA is designed and used for providing data access within a home.
  • a MoCA end device is required.
  • the MoCA end device may be a MoCA adapter or modem, having at least a coaxial connector for connection to the coaxial network, and a network output, such as an Ethernet switch.
  • the end device further includes a MoCA chip or chipset, configured to control media-sharing in accordance with one or more of the MoCA specifications, in cable-equipped households.
  • each such MoCA end devices has a relatively high level of complexity, which results in a high cost of production and configuration.
  • a host device including a microcontroller or microprocessor device, is always present.
  • the host device function as a translator for received configuration messages and communication to various network devices and other circuitry on the printed circuit board (PCB).
  • PCB printed circuit board
  • MoCA technology is employed for providing data access to a plurality of independent user entities connected to a common coaxial network.
  • an already present coaxial network in e.g. a multi-family house, a hotel etc., can be employed for providing access to an external physical broadband data channel, such as an optical fiber cable.
  • a network management device connects an external data channel to the coaxial network, and the management device is configured with a MoCA chip.
  • One or more connected MoCA end devices are connected to the coaxial network, each comprising a MoCA chip. In this case, multiple modems on the same channel share the same access medium, i.e. the coaxial network.
  • Configuration of each MoCA modem is in this MoCA access application crucial for enabling access to the external access network, securing network traffic isolation of individual access modems, assuring Quality of Service (QoS), and configuring other functionalities related to network parameters normally found in network chip devices.
  • a control unit comprising the MoCA chip in the network management device is configured to establish an access function, creating a control channel over the coaxial network to each connected MoCA end device.
  • a network access unit is connected to a bus on the MoCA chip.
  • FIG. 1 schematically illustrates deployment of a system for providing data communication over a MoCA network in a construction complex
  • FIG. 2 schematically illustrates is a principle view of a system according to FIG. 1 ;
  • FIG. 3 schematically illustrates a network management device for use in a system for providing data communication over a MoCA network
  • FIG. 4 schematically illustrates a MoCA end device, such as a network adapter, according to the state of the art.
  • FIG. 5 schematically illustrates a MoCA end device for use in a system for providing data communication over a MoCA network according to FIG. 2 .
  • Embodiments of the invention are described herein with reference to schematic illustrations of idealized embodiments of the invention. As such, variations from the shapes and relative sizes of the illustrations as a result, for example, of manufacturing techniques and/or tolerances, are to be expected. Thus, embodiments of the invention should not be construed as limited to the particular shapes and relative sizes of regions illustrated herein but are to include deviations in shapes and/or relative sizes that result, for example, from different operational constraints and/or from manufacturing constraints. Thus, the elements illustrated in the figures are schematic in nature and their shapes are not intended to illustrate the actual shape of a region of a device and are not intended to limit the scope of the invention.
  • FIG. 1 illustrates, by way of example, a construction complex 1 in the form of a single building.
  • the construction complex 1 may e.g. be a block of apartments or a hotel.
  • a coaxial network 2 is provided in the construction complex 1 , having sockets in all or a plurality of the different building units, such as building units 4 and 5 .
  • Both apartment buildings and hotels normally have a coaxial network covering all apartments or hotel rooms for TV signal distribution.
  • a network management unit 10 is connected to the coaxial network 2 , and connected to external data channel 3 , such as a supply data cable or an optical fiber.
  • the network management device 10 may e.g. be installed in a basement, as illustrated, or on a loft of the building 1 , and may be connected after a TV amplifier.
  • the network management device 10 makes use of the previously un-used frequency spectrum above the regular TV spectrum (5-790 MHz) in coaxial cables for data transportation.
  • the network management device 10 is configured to merge an incoming data stream from the external data channel 3 and a TV-signal, where applicable, into the same cable and to send it through the coaxial network 2 .
  • the signals are divided by an end device 100 , 101 , such as an access modem, operating under a MoCA specification. Since the data stream and TV-signal are using separate frequency spectrums, the TV signal is effectively isolated from the data stream.
  • FIG. 2 illustrates the basic architectural structure of a system according to one embodiment, where the network management device 10 is shown at the top, connected between an external data channel 3 and a coaxial network 2 .
  • a plurality of MoCA end devices 100 - 104 are connected to the coaxial network 2 , operable to obtain access to the external data channel 3 through the network management device 10 .
  • a MoCA end device 100 may receive television signals over the coaxial network 2 for output on a connected TV set 202 , which may include or be connected through a set top box (not shown).
  • the MoCA end device 100 may be configured to provide network access to a connected computer 201 , usable for receiving multimedia data.
  • the MoCA end device 100 may further comprise a wireless access point, for radio access to the MoCA end device 100 from various portable radio communication devices such as computers, mobile phones, tablets etc. Further configuration and operation of the system will be described with reference to the drawings of the network management device 10 and MoCA end device 100 , respectively, by way of example.
  • FIG. 3 schematically illustrates the network management device 10 in one embodiment, comprising a connector 14 for connection to an external data channel 3 , such as an optical fiber or other physical carrier of broadband data.
  • a connector 13 is provided for connection to a coaxial network 2 .
  • a control unit 11 is provided in the network management device 10 , inter alia for controlling communication with MoCA end devices connected to the coaxial network 2 .
  • the control unit 11 includes MoCA chip 12 .
  • a MoCA chip is the hardware chip implementing the MoCA protocol and the HW required for fulfilling the MoCA specification, and such chips are available on the market.
  • Hardware content in the MoCA chip typically includes baseband radio/power amplifier & Low noise amplifier, mixers, RF-switches, microprocessor, clock circuitry and an Ethernet packet bus of some type.
  • MoCA chip makers apply the MoCA specification to the chip design by selection of chip content required to fulfill specification. This may vary depending on MoCA Specification version, of which currently versions 1.0, 1.1, 2.0, 2.5 exist.
  • the control unit 11 is operated to control a MoCA chip in the connected MoCA end devices 100 , and to access devices connected to the MoCA chip in such MoCA end devices 100 .
  • CATV and MoCA channels may be combined in a combiner (not shown) which is a frequency band selective device.
  • the combiner may combine several MoCA channels and several CATV channels to be distributed to the same coaxial network 2 .
  • a network management device 10 may have several MoCA channels of different frequencies connected to a combiner and distributed to the coaxial network 2 .
  • the CATV signals may be origin from a satellite system, terrestrial TV system, fiber optical CATV distribution network or other source of CATV.
  • FIG. 4 schematically illustrates a MoCA end device 40 according to the state of the art, such as an MoCA modem or network adapter.
  • a MoCA end device 40 includes a plurality of components, connected to one or more PCBs 114 , held in a case (not shown).
  • a connector 112 is provided for connection to a coaxial network 2 .
  • the coax connector 112 is connected to a MoCA chip 110 .
  • the MoCA chip is connected with a management data clock (MDC)/ management data input/output (MDIO) interfaces 115 and an Ethernet bus 116 from General-purpose input/output (GPIO) to a host device 113 .
  • MDC management data clock
  • MDIO management data input/output
  • Ethernet bus 116 from General-purpose input/output
  • the host device 113 may be connected with one or more of a Double Data Rate (DDR) memory 1131 , host clock circuitry 1132 , a boot memory 1133 , an operating system memory 1134 , and a power supply 1135 for host components and filters.
  • DDR Double Data Rate
  • the host device 113 is a master and the MoCA device 110 is a slave.
  • the host device typically a microprocessor or microcontroller, translates data communication from the MoCA device to all other connected hardware devices, such as indicated devices 111 , 117 - 120 , which may include a memory 117 connected by a Serial Peripheral Interface (SPI), LED control 118 connected by GPIO, sensors 119 connected through an I2C interface, an Ethernet switch 111 connected through an Ethernet bus, and a Wi-Fi access point (not shown).
  • SPI Serial Peripheral Interface
  • LED control 118 connected by GPIO
  • sensors 119 connected through an I2C interface
  • an Ethernet switch 111 connected through an Ethernet bus
  • Wi-Fi access point not shown
  • this configuration of the MoCA end device entails a high level of complexity on the PCB 114 for the host device to function properly, and requires that code for the host functionality must be independently developed for every particular MoCA end device type. This creates a lot of design and production related costs and time to market increases.
  • multiple end devices on the same channel share the same access medium (coaxial cable channel, i.e. network) in a setup as indicated in FIG. 2 .
  • Configuration of each MoCA end device is in this MoCA access application crucial for enabling access to the external access network 3 , securing network traffic isolation of individual MoCA end devices 100 - 104 , assuring Quality of Service (QoS), and e.g. configuring other functionalities related to Ethernet network parameters found in an Ethernet switch.
  • QoS Quality of Service
  • FIG. 5 illustrates a MoCA end device 100 according to one embodiment, for use in the system shown in FIGS. 1 and 2 .
  • the coax connector 112 is connected to a MoCA chip 110 , which in turn is connected to a host device 113 .
  • the MoCA chip 110 is the master to the various connected devices, e.g. a Memory(SPI) 117 , LED-control(GPIO) 118 , a temperature sensor (I2C-bus) 119 , a network access device 111 , such as an Ethernet switch, and a Wi-Fi Access Point 120 , or any other device using a data bus (I2C, SPI, MDC/MDIO, GPIO).
  • a data bus I2C, SPI, MDC/MDIO, GPIO
  • the MoCA chip 110 may also be connected to a host 113 over MDC/MDIO, if needed, which in turn may be connected to various devices 1132 - 1135 as outlined in connection with the description of FIG. 4 .
  • This reversed configuration where the MoCA chip 110 act as a master to bus-connected devices, including the network access device 111 , means that the MoCA end device 100 can be produced with lower degree of complexity, since the host need not be programmed specifically with regard to the various devices 111 , 117 - 120 on the PCB 144 , connected to the MoCA chip 110 . Instead, each connected device 111 , 117 - 120 may be addressed specifically over a control channel on the coaxial network, from the MoCA chip 12 in the network management device 10 .
  • MDIO Management Data Input/Output
  • I2C Inter-Integrated Circuit
  • SPI Serial Peripheral Interface
  • I2C uses a two wire bus and are commonly used for simpler devices like sensors, real time clocks, analog-to-digital converters etc.
  • SPI is commonly used for memories and high speed devices but can also be used for simpler devices.
  • These three hardware protocols compose the majority of the current market implemented standards for communicating to hardware devices.
  • an ACCESS function is implemented in the network management device 10 and on MoCA end devices 100 , by the control unit 11 and in the MoCA chips 12 , 110 .
  • the access function nomenclature includes three software parts. One is implemented in the MoCA chip 12 on the management device 10 and one is implemented in the MoCA chip 110 on the MoCA end device 100 .
  • the software implementation in the MoCA chips 12 , 110 enables bidirectional data transfer over the communication channel 20 , also referred to as control channel, to all connected MoCA end devices 100 , 40 .
  • the MoCA chip 110 where a software application interprets the received data and executes hardware functions, e.g. MDIO, I2C, SPI, GPIO commands.
  • the control channel 20 can be an existing control channel like L2ME already existing in the MoCA specification; but data can also be transferred in numerous ways both inside the MoCA protocol and in the form of Ethernet packets and this invention shall not be limited by the method and/or protocol of data transfer between MoCA chips.
  • a third software part is an API (Application Programming Interface) implemented on the control unit 11 on the management device 10 .
  • This API enables direct access to hardware devices 111 , 117 - 120 on the MoCA end device 100 .
  • the control unit 11 is communicating over the API with the MoCA chip 12 over MDIO or an Ethernet bus.
  • a command argument flag enables differentiation between individual MoCA end devices communicated with. This enables the configuration process of MoCA end device 10 to be moved from the host device 113 to the control unit 11 .
  • the established channel 20 may be set up using an existing MoCA process.
  • MoCA provides a layer 2 communication protocol that may be used for management and monitoring called MoCA Level 2 Management Entity (L2ME), and is an integral part of MoCA protocol.
  • L2ME MoCA Level 2 Management Entity
  • Another layer- 2 protocol that can be used for management and monitoring of MoCA Nodes is the IEEE 1905 standard.
  • L2ME MoCA Level 2 Management Entity
  • Another layer- 2 protocol that can be used for management and monitoring of MoCA Nodes is the IEEE 1905 standard.
  • a custom communication protocol is implemented around this raw data transportation which transports frames with configuration commands to the end devices 100 .
  • the configuration command is interpreted by a host on the end device 100 which further configures the Ethernet switch 111 or any of the other devices 117 - 120 .
  • An end device 100 can also send current configuration status through the communication channel and inform the management unit 10 .
  • the hw signals triggered from the ACCESS function are input/output on the MoCA chip 110 on the MoCA end device 100 .
  • an application frame format is applied in the network management device 10 which targets the MoCA chip 110 buses directly. This way, a benefit of connecting the MoCA chip 110 in the MoCA end device 100 directly to various devices such as an Ethernet switch 111 , rather than through a translating host device, will be readily apparent.
  • an application frame format is applied in the ACCESS function for MDIO Commands.
  • the following function arguments may be employed in this context:
  • MoCA chip 110 can be addressed using a -a flag.
  • the object is to write to NodeID (MoCA end device 100 ) 3
  • Ethernet switch 111 physical address 2 in Ethernet switch 111 register 1
  • the data 0x12345678, the command may be:
  • the command may be:
  • the response could then be: 0x12345678
  • the ACCESS function must validate recipient of command, i.e. Node device # must respond OK, but the command itself must not be validated. In other words, a write command must not be validated, instead a read command may be issued to validate the write command.
  • the MoCA chip 110 comprises at least one MDC/MDIO port, preferably implemented as per Ethernet sub clause 22.2.4.5. This is the standard that almost all Ethernet network switches use and implement. Through this channel all configuration of a MoCA network access modem realized through the network access unit 111 can be achieved. Several Ethernet devices can be addressed through a physical address parameter -a to differentiate between devices.
  • the MoCA chip should further comprise at least one GPIO port, for use to SET/CLEAR/READ. With these commands common signals like network device reset, self-reset, LED-control, etc. can be configured and controlled actively.
  • SET or CLEAR makes the port an output (driver enabled) while a read command makes the port an input (driver disabled).
  • the MoCA chip may further include a I2C (Inter-Integrated Circuit) port, using a HW protocol is commonly used by various memory devices and sensors. This port may be emulated in SW by the GPIO port above.
  • I2C Inter-Integrated Circuit
  • the MoCA chip may further include an SPI (Serial Peripheral Interface) port, operating under a HW protocol commonly used by various memory devices and sensors. This port could be emulated in SW by the GPIO port above.
  • SPI Serial Peripheral Interface
  • the MoCA system and end device which have been described by reference to various embodiments above, provide solutions for convenient network access through a coaxial network to an external data channel.
  • the proposed solutions have several benefits over the state of the art. Specifically, the system solution is advantageous were a plurality of MoCA end devices which are associated with different user entities, such as different subscribers, persons, companies, hotel rooms etc., with independent data access are connected to a common coaxial network.
  • the proposed solutions move software development to the network management unit side and reduces complexity in the MoCA end device configuration.
  • the novel configuration of the MoCA end device such as a modem or network adapter, no software development required in R&D process. This reduces cost and time to market, as well as reducing size, weight and power consumption of the MoCA end device.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Computing Systems (AREA)
  • Multimedia (AREA)
  • Small-Scale Networks (AREA)
  • Mobile Radio Communication Systems (AREA)
US15/341,739 2016-07-08 2016-11-02 System for providing data communication over a coaxial network Active 2036-11-22 US10149019B2 (en)

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Application Number Priority Date Filing Date Title
EP16178618 2016-07-08
EP16178618.1 2016-07-08
EP16178618.1A EP3267627B1 (de) 2016-07-08 2016-07-08 System zur bereitstellung von datenkommunikation über ein koaxiales netzwerk

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US10149019B2 true US10149019B2 (en) 2018-12-04

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EP (1) EP3267627B1 (de)
CN (1) CN109417499B (de)
BR (1) BR112018075624B1 (de)
CA (1) CA3029553C (de)
ES (1) ES2686945T3 (de)
IL (1) IL264015B (de)
PL (1) PL3267627T3 (de)
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CN111669262A (zh) * 2020-05-11 2020-09-15 北京瀚诺半导体科技有限公司 数据发送的方法、装置、电子设备及介质

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BR112018075624A2 (pt) 2019-03-19
CA3029553A1 (en) 2018-01-11
IL264015B (en) 2021-10-31
CN109417499B (zh) 2020-01-07
CA3029553C (en) 2024-04-09
EP3267627A1 (de) 2018-01-10
CN109417499A (zh) 2019-03-01
US20180014080A1 (en) 2018-01-11
ZA201900683B (en) 2019-10-30
EP3267627B1 (de) 2018-06-13
PL3267627T3 (pl) 2018-11-30
BR112018075624B1 (pt) 2020-10-27
ES2686945T3 (es) 2018-10-22
WO2018007057A1 (en) 2018-01-11
IL264015A (en) 2019-01-31

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